<template>
	<view style="background: #f3f4f5;">
		<!-- 	<view v-if="showHeader" class="status" :style="{position:headerPosition,top:statusTop}"></view>
		<view v-if="showHeader" class="header" :style="{position:headerPosition,top:headerTop}">
			<view class="title">购物车</view>
		</view> -->
		<!-- 占位 -->
		<!-- <view v-if="showHeader" class="place"></view> -->
		<!-- 商品列表-->
		<view class="" style="margin-bottom:120rpx;">
			<view class="goods-list" v-for="(row,index) in goodsList" :key="index">
		<!-- 		<view class="tis" v-if="goodsList.length==0">购物车是空的哦~</view> -->
				<view class="row" >
					<!-- 删除按钮 -->
					<view class="menu" @tap.stop="deleteGoods(row.id)">
						<view class="icon shanchu"></view>
					</view>
					<!-- 商品 -->
					<view class="carrier" :class="[theIndex==index?'open':oldIndex==index?'close':'']" @touchstart="touchStart(index,$event)"
					 @touchmove="touchMove(index,$event)" @touchend="touchEnd(index,$event)">
						<!-- checkbox -->
						<view class="checkbox-box" @tap="selected(index)">
							<view class="checkbox">
								<view :class="[row.selected?'on':'']"></view>
							</view>
						</view>
						<!-- 商品信息 -->
						<view class="goods-info" @tap="toGoods(row)">
							<view class="img">
								<image :src="row.goods_image"></image>
							</view>
							<view class="info">
								<view class="title">{{row.title}}</view>
								<view class="spec">{{row.title_f}}</view>
								<view class="price-number">
									<view class="price">￥{{row.price}}</view>
									<view class="number">
										<view class="sub" @tap.stop="sub(index,row.gid)">
											<view class="icon jian"></view>
										</view>
										<view class="input" @tap.stop="discard">
											<input disabled="disabled" type="number" v-model="row.num" @input="sum($event,index)" />
										</view>
										<view class="add" @tap.stop="add(index,row.gid)">
											<view class="icon jia"></view>
										</view>
									</view>
								</view>
							</view>
						</view>
					</view>
				</view>
			</view>
			
		</view>
		<!-- 脚部菜单 -->
		<view class="footer" :style="{bottom:footerbottom}">
			<view class="checkbox-box" @tap="allSelect">
				<view class="checkbox">
					<view :class="[isAllselected?'on':'']"></view>
				</view>
				<view class="text">全选</view>
			</view>
			<view class="delBtn" @tap="deleteList" v-if="selectedList.length>0">删除</view>
			<view class="settlement">

				<view class="sum" v-if="flag">
					<view class="money">合计:￥{{zkprice}}</view>
				</view>

				<view class="sum" v-else>
					<view class="money">会员价:￥{{zkprice}}</view>
					<view class="money  original"> 原价:￥{{sumPrice}}</view>
				</view>



				<!-- 	<view class="sum">原价:<view class="money">￥{{sumPrice}}</view></view> -->
				<view class="btn" @tap="toConfirmation">结算({{selectedList.length}})</view>
			</view>
		</view>
	</view>
</template>

<script>
	export default {
		data() {
			return {
				sumPrice: '0.00',
				zkprice: '0.00',
				flag: false,
				headerPosition: "fixed",
				headerTop: null,
				statusTop: null,
				showHeader: true,
				selectedList: [],
				isAllselected: false,
				goodsList: [],
				//控制滑动效果
				theIndex: null,
				oldIndex: null,
				isStop: false,
				//添加
				num:'',
			}
		},
		onPageScroll(e) {
			//兼容iOS端下拉时顶部漂移
			this.headerPosition = e.scrollTop >= 0 ? "fixed" : "absolute";
			this.headerTop = e.scrollTop >= 0 ? null : 0;
			this.statusTop = e.scrollTop >= 0 ? null : -this.statusHeight + 'px';
		},
		//下拉刷新，需要自己在page.json文件中配置开启页面下拉刷新 "enablePullDownRefresh": true
		onPullDownRefresh() {
			setTimeout(function() {
				uni.stopPullDownRefresh();
			}, 1000);
		},
		onLoad() {
			
			//兼容H5下结算条位置
			// #ifdef H5
			this.footerbottom = document.getElementsByTagName('uni-tabbar')[0].offsetHeight + 'px';
			// #endif
			// #ifdef APP-PLUS
			this.showHeader = false;
			this.statusHeight = plus.navigator.getStatusbarHeight();
			// #endif
			this.cartList()
		},
		onShow() {
	
		},
		
		methods: {

			cartList() {
				this.$ajax(
					this.apiList.cartlist,
					'POST',
				).then(res => {
					if(res.zk===1){
						this.flag = true
					}
					this.goodsList = res.data
				
					this.allSelect()
	
					//加载时获取徽标
					uni.setTabBarBadge({
						index: 3,
						text: `${this.goodsList.length}`
					})
					
					// console.log(this.goodsList.length);
					// this.hb = this.goodsList.length
					
				})
			},


			//加入商品 参数 goods:商品数据
			// joinGoods(goods) {

			// 	/*
			// 	 * 这里只是展示一种添加逻辑，模板并没有做从其他页面加入商品到购物车的具体动作，
			// 	 * 在实际应用上，前端并不会直接插入记录到goodsList这一个动作，一般是更新列表和本地列表缓存。
			// 	 * 一般商城购物车的增删改动作是由后端来完成的,
			// 	 * 后端记录后返回前端更新前端缓存
			// 	 */
			// 	let len = this.goodsList.length;
			// 	let isFind = false; //是否找到ID一样的商品
			// 	for (let i = 0; i < len; i++) {
			// 		let row = this.goodsList[i];
			// 		if (row.id == goods.id) { //找到商品一样的商品
			// 			this.goodsList[i].number++; //数量自增
			// 			isFind = true; //找到一样的商品
			// 			break; //跳出循环
			// 		}
			// 	}
			// 	if (!isFind) {
			// 		//没有找到一样的商品，新增一行到购物车商品列表头部
			// 		this.goodsList[i].unshift(goods);
			// 	}
			// },
			//控制左滑删除效果-begin
			touchStart(index, event) {
				//多点触控不触发
				if (event.touches.length > 1) {
					this.isStop = true;
					return;
				}
				this.oldIndex = this.theIndex;
				this.theIndex = null;
				//初始坐标
				this.initXY = [event.touches[0].pageX, event.touches[0].pageY];
			},
			touchMove(index, event) {
				//多点触控不触发
				if (event.touches.length > 1) {
					this.isStop = true;
					return;
				}
				let moveX = event.touches[0].pageX - this.initXY[0];
				let moveY = event.touches[0].pageY - this.initXY[1];

				if (this.isStop || Math.abs(moveX) < 5) {
					return;
				}
				if (Math.abs(moveY) > Math.abs(moveX)) {
					// 竖向滑动-不触发左滑效果
					this.isStop = true;
					return;
				}

				if (moveX < 0) {
					this.theIndex = index;
					this.isStop = true;
				} else if (moveX > 0) {
					if (this.theIndex != null && this.oldIndex == this.theIndex) {
						this.oldIndex = index;
						this.theIndex = null;
						this.isStop = true;
						setTimeout(() => {
							this.oldIndex = null;
						}, 150)
					}
				}
			},
			touchEnd(index, $event) {
				//结束禁止触发效果
				this.isStop = false;
			},
			//控制左滑删除效果-end


			//商品跳转
			toGoods(e) {
				// uni.showToast({
				// 	title: '商品' + e.id,
				// 	icon: "none"
				// });
				uni.navigateTo({
					url: '../../goods/goods'
				});
			},
			//跳转确认订单页面
			toConfirmation() {
				let tmpList = [];
				let len = this.goodsList.length;
				for (let i = 0; i < len; i++) {
					if (this.goodsList[i].selected) {
						tmpList.push(this.goodsList[i]);
					}
				}
				if (tmpList.length < 1) {
					uni.showToast({
						title: '请选择商品结算',
						icon: 'none'
					});
					return;
				}
				uni.setStorage({
					key: 'buylist',
					data: tmpList,
					success: () => {
						uni.navigateTo({
							url: './confirm/confirm?defaults='+1
						})
					}
				})
			},
			//删除商品
			deleteGoods(id) {
				let len = this.goodsList.length;
				for (let i = 0; i < len; i++) {
					if (id == this.goodsList[i].id) {
						this.goodsList.splice(i, 1);
						break;
					}
				}
				this.selectedList.splice(this.selectedList.indexOf(id), 1);
				this.sum();
				this.cartList()
				this.oldIndex = null;
				this.theIndex = null;
				this.$ajax(
					this.apiList.leave, {
						cid: id
					},
					'POST',
				).then(res => {
					this.$sToast(res.msg)
				})

			},
			// 删除商品s
			deleteList() {
				let len = this.selectedList.length;
				while (this.selectedList.length > 0) {
					this.deleteGoods(this.selectedList[0]);
				}
				this.selectedList = [];
				this.isAllselected = this.selectedList.length == this.goodsList.length && this.goodsList.length > 0;
				this.sum();

			},
			// 选中商品
			selected(index) {
				this.goodsList[index].selected = this.goodsList[index].selected ? false : true;
				let i = this.selectedList.indexOf(this.goodsList[index].id);
				console.log(this.goodsList[index].selected)
				i > -1 ? this.selectedList.splice(i, 1) : this.selectedList.push(this.goodsList[index].id);
				this.isAllselected = this.selectedList.length == this.goodsList.length;
				this.sum();
		
			},
			//全选
			allSelect() {
				let len = this.goodsList.length;
				console.log(len)
				let arr = [];
				for (let i = 0; i < len; i++) {
					this.goodsList[i].selected = this.isAllselected ? false : true;
					console.log(this.goodsList[i].selected)
					arr.push(this.goodsList[i].id);
				}
				this.selectedList = this.isAllselected ? [] : arr;
			
				this.isAllselected = this.isAllselected || this.goodsList.length == 0 ? false : true;
	
				this.sum();

			},
			// 减少数量
			sub(index, id) {
				if(this.goodsList[index].number<=1){
					return;
				}
				this.sum();
				this.$ajax(
					this.apiList.delcar, {
						gid: id
					},
					'POST'
				).then(res => {
					if (res.code == 0) {
						this.$sToast(res.msg)
					} else {
						this.goodsList[index].num--;
						//购物车徽标
						// uni.setTabBarBadge({
						// 	index: 3,
						// 	text: res.num
						// })
					}

				})
			
			},
			// 增加数量
			add(index, id) {
				this.sum();
				this.$ajax(
					this.apiList.addcar, {
						gid: id
					},
					'POST',
				).then(res => {
					if (res.code == 0) {
						this.$sToast(res.msg)
					} else {
						this.goodsList[index].num++;
						//增加数量
						// this.num = res.num
						// uni.setTabBarBadge({
						// 	//购物车徽标
						// 	index: 3,
						// 	text:res.num
						// })
					}
					// console.log(res)
				})

			},
			// 合计
			sum(e, index) {
		
				let len = this.goodsList.length;
			
				
				for (let i = 0; i < len; i++) {
					this.sumPrice = 0;
					if (this.goodsList[i].zk === 1) {
						this.flag = true
						if (this.goodsList[i].selected) {
							if (e && i == index) {
								this.sumPrice = this.sumPrice + (e.detail.value * this.goodsList[i].price);
							} else {
								this.sumPrice = this.sumPrice + (this.goodsList[i].num * this.goodsList[i].price);
							}
						}
						this.sumPrice = this.sumPrice.toFixed(2);
					} else {
			
				//折后价格
				this.zkprice = 0;
				let lens = this.goodsList.length;
				for (let i = 0; i < lens; i++) {

					if (this.goodsList[i].selected) {
						if (e && i == index) {
							this.zkprice = this.zkprice + (e.detail.value * this.goodsList[i].price);
						} else {
							this.zkprice = this.zkprice + (this.goodsList[i].zk * this.goodsList[i].num * this.goodsList[i].price);
						this.sumPrice = this.sumPrice + (this.goodsList[i].num * this.goodsList[i].price);
						}
					}
				}
				this.zkprice = this.zkprice.toFixed(2);
				this.sumPrice = this.sumPrice.toFixed(2);
						
					}

				}

			
			},
			discard() {
				//丢弃
			}


		}
	}
</script>
<style lang="scss">
	@import "@/static/iconfont/font.scss";

	page {
		position: relative;
		background-color: #fff;
	}

	.checkbox-box {
		display: flex;
		align-items: center;

		.checkbox {
			width: 35upx;
			height: 35upx;
			border-radius: 100%;
			border: solid 2upx rgba(139, 221, 142, 1);
			display: flex;
			justify-content: center;
			align-items: center;

			.on {
				width: 25upx;
				height: 25upx;
				border-radius: 100%;
				background-color: rgba(139, 221, 142, 1);
			}
		}

		.text {
			font-size: 28upx;
			margin-left: 10upx;
		}
	}

	.status {
		width: 100%;
		height: 0;
		position: fixed;
		z-index: 10;
		background-color: #fff;
		top: 0;
		/*  #ifdef  APP-PLUS  */
		height: var(--status-bar-height); //覆盖样式
		/*  #endif  */
	}

	.header {
		width: 92%;
		padding: 0 4%;
		height: 100upx;
		display: flex;
		align-items: center;
		position: fixed;
		top: 0;
		z-index: 10;
		background-color: #fff;
		/*  #ifdef  APP-PLUS  */
		top: var(--status-bar-height);

		/*  #endif  */
		.title {
			font-size: 36upx;
		}

	}

	.place {

		background-color: #ffffff;
		height: 100upx;
		/*  #ifdef  APP-PLUS  */
		margin-top: var(--status-bar-height);
		/*  #endif  */
	}

	.goods-list {
		// width: 100%;
		// margin: 10upx 0 0upx 0;
		background: #f3f4f5;
		.tis {
			width: 100%;
			height: 60upx;
			display: flex;
			justify-content: center;
			align-items: center;
			font-size: 32upx;
		}

		.row {
			width: calc(92%);
			height: calc(22vw + 50upx);
			margin: 20upx auto;
			border-radius: 15upx;
			// box-shadow: 0upx 5upx 20upx rgba(0, 0, 0, 0.1);
			display: flex;
			align-items: center;
			position: relative;
			// overflow: hidden;
			z-index: 4;
			// margin-top: -80rpx;
			// margin-top: -130rpx;
			border: 0;
			.menu {
				.icon {
					color: #fff;
					// font-size: 25upx;
				}

				position: absolute;
				width: 30%;
				height: 100%;
				right: 0;
				display: flex;
				justify-content: center;
				align-items: center;
				background-color: red;
				color: #fff;
				z-index: 2;
			}

			.carrier {
				@keyframes showMenu {
					0% {
						transform: translateX(0);
					}

					100% {
						transform: translateX(-30%);
					}
				}

				@keyframes closeMenu {
					0% {
						transform: translateX(-30%);
					}

					100% {
						transform: translateX(0);
					}
				}

				&.open {
					animation: showMenu 0.25s linear both;
				}

				&.close {
					animation: closeMenu 0.15s linear both;
				}

				background-color: #fff;

				.checkbox-box {
					padding-left: 20upx;
					flex-shrink: 0;
					height: 22vw;
					margin-right: 20upx;
				}

				position: absolute;
				width: 100%;
				padding: 0 0;
				height: 100%;
				z-index: 3;
				display: flex;
				align-items: center;

				.goods-info {
					width: 100%;
					display: flex;
					padding-right: 20upx;

					.img {
						width: 22vw;
						height: 22vw;
						border-radius: 10upx;
						overflow: hidden;
						flex-shrink: 0;
						margin-right: 10upx;

						image {
							width: 22vw;
							height: 22vw;
						}
					}

					.info {
						width: 100%;
						height: 22vw;
						overflow: hidden;
						display: flex;
						flex-wrap: wrap;
						position: relative;

						.title {
							width: 100%;
							font-size: 28upx;
							display: -webkit-box;
							-webkit-box-orient: vertical;
							-webkit-line-clamp: 2;
							// text-align: justify;
							overflow: hidden;
						}

						.spec {
							font-size: 20upx;
							width: 40%;
							color: #a7a7a7;
							height: 30upx;
							display: flex;
							align-items: center;
							padding: 0 10upx;
							border-radius: 15upx;
							margin-bottom: 20vw;
							text-overflow: ellipsis;
						}

						.price-number {
							position: absolute;
							width: 100%;
							bottom: 0upx;
							display: flex;
							justify-content: space-between;
							align-items: flex-end;
							font-size: 28upx;
							height: 60upx;

							.price {}

							.number {
								display: flex;
								justify-content: center;
								align-items: flex-end;

								.input {
									width: 60upx;
									height: 45upx;
									display: flex;
									align-items: center;
									justify-content: center;
									background-color: #f3f3f3;

									input {
										width: 60upx;
										height: 60upx;
										display: flex;
										justify-content: center;
										align-items: center;
										text-align: center;
										font-size: 26upx;
									}
								}

								.sub,
								.add {
									width: 45upx;
									height: 45upx;
									background-color: #f3f3f3;
									border-radius: 5upx;

									.icon {
										font-size: 22upx;
										width: 45upx;
										height: 45upx;
										display: flex;
										justify-content: center;
										align-items: center;
									}
								}
							}
						}
					}
				}
			}
		}
	}

	.footer {
		width: 92%;
		padding: 0 4%;
		background-color: #fbfbfb;
		height: 100upx;
		display: flex;
		justify-content: space-between;
		align-items: center;
		font-size: 28upx;
		position: fixed;
		bottom: 0upx;
		z-index: 5;

		.delBtn {
			border: solid 1upx #f06c7a;
			color: #f06c7a;
			padding: 0 30upx;
			height: 50upx;
			border-radius: 30upx;
			display: flex;
			justify-content: center;
			align-items: center;
		}

		.settlement {
			width: 60%;
			display: flex;
			// justify-content: flex-end;
			justify-content: space-between;
			align-items: center;
			.sum {
				width: 50%;
				font-size: 28upx;
				margin-right: 10upx;
				display: flex;
				flex-direction: column;
				color: red;
				// justify-content: flex-end;

				.money {
					// font-weight: 600;
					width: 500rpx;
					font-size: 26rpx;
					
				}

				.original {
					font-size: 22rpx;
					font-family: PingFang SC;
					font-weight: 400;
					color: rgba(97, 97, 97, 1);
					margin-left: 15%;
					text-decoration: line-through;
				}
			}

			.btn {
				padding: 0 30upx;
				height: 50upx;
				background-color: #FF3542;
				color: #fff;
				display: flex;
				justify-content: center;
				align-items: center;

				border-radius: 30upx;
			}
		}
	}
</style>
